Redmine is a flexible open source project management web application written in Ruby on Rails that supports multiple projects, issue tracking, Gantt charts, wikis, forums, time tracking, and SCM integration. The Redmine REST API exposes JSON and XML endpoints for issues, projects, users, time entries, wiki pages, attachments, and more. Authentication is supported via HTTP Basic credentials or per-user API keys, with optional user impersonation for administrator accounts.
Redmine publishes 18 API contracts indexed on the APIs.io network, including Attachments API, Custom Fields.json API, Groups.json API, and 15 more. Tagged areas include Project Management, Issue Tracking, Open Source, Ruby on Rails, and Bug Tracking.
The Redmine catalog on APIs.io includes 1 Spectral governance ruleset.
Redmine’s developer surface includes authentication, documentation, engineering blog, and 12 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it
carries 10 points of the composite. It is scored from the published contracts
themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already
holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in
front of it, and the first time that check is skipped a duplicate record is created.
Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet,
not penalised by it.
The six quality facets above are damped to 75 points between them,
because the conditional facet above carries the other
25. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 75% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
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Agent readiness — checks not met, largest first (exact, from this profile):
MCP Server+12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency+9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics+8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
Rate-Limit Signaling+7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.
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Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
REST API for Redmine providing JSON and XML access to issues, projects, users, time entries, wiki pages, attachments, versions, and other entities. Authentication uses HTTP Basi...
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